This is designed to extend GarminDevicev2.xsd. It allows the device to specify limits for data that is sent to it. For more information on Garmin Device schema, see http://www8.garmin.com/xmlschemas/GarminDevicev2.xsd Specifies the maximum number of routes that the device can hold at one time. Specifies the maximum number of via and shaping points a route can contain. Specifies the maximum number of shaping points that can exist between two vias in a route. Specifies the maximum length of a route name. Specifies the maximum number of via and shaping points a device can hold at one time. Specifies the maximum number of waypoints that the device can hold at one time. Specifies the maximum length of a waypoint name. Specifies if a waypoint ID must be unique. Specifies the maximum number of tracks that the device can hold at one time. Specifies the maximum number of tracks that the device can hold at one time. Specifies the maximum length of a track name. Specifies the maximum number of map tiles an IMG file should contain Specifies the maximum size of an IMG file in MB Specifies the maximum number of JNX (BirdsEye) files that the device can hold at one time. Specifies the maximum number of tiles a JNX file should contain This type provides the ability to extend any data type that includes it.